def area(x, y):
    s = x * y
    print(s)


def fun(x, *y):
    print(str(x) + " " + str(y))


def fun2(x, **y):
    print(str(x) + " " + str(y))


area(12, 13)
fun(2, 3, 4)
fun2(2, a=2, b=3)
